Epson 802.11g Reference Manual page 257

Tips
Instructions on Using DHCP
When you assign an IP address to the network interface using the
DHCP function, you need to change the printer port setting every
time you turn on the device.
We recommend that you make one of the settings below on the
DHCP server or the router and then assign a valid IP address to
the network interface:
Assign a valid IP address to the MAC address of the network
interface.
Assign an IP address that is within the range of the
assignment of the DHCP server. Do not let the DHCP server
assign the IP address to any other devices.
If you cannot make the above settings on the DHCP server, make
one of the settings below:
Assign an IP address that is not within the range of the
assignment of the DHCP server.
Assign an IP address that is within the range of the
assignment of the DHCP server. In this case, you must turn
on the network interface first, and then turn on the DHCP
server.
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